I have an Apple computer and ran into some problems with downloading the v32 software. Fortunately, I purchased from a dealer (Tischer BMW/Porsche) online for $8 plus shipping...I have an MKIV but the disc may still work for you. Here is the site where I purchased...
http://www.trademotion.com/partlocat...72&catalogid=0

There are a bunch of threads in the navigation forum that will point you in the right direction if you decide to download from the net.

Good Luck